TM 5-4310-393-14
WELL VENTILATED AREA AWAY FROM OPEN FLAME, ARCING EQUIPMENT,
IGNITION SOURCES, HEATERS, OR EXCESSIVE HEAT. ENGINE MUST BE SHUT
DOWN AND COOL BEFORE REFUELING. ALWAYS STORE FUEL IN PROPER,
MARKED CONTAINERS. DO NOT SMOKE.
WARNING
DEATH OR SERIOUS INJURY COULD OCCUR IF COMPRESSED AIR IS DIRECTED
AGAINST THE SKIN. DO NOT USE COMPRESSED AIR FOR CLEANING OR
DRYING UNLESS THE PRESSURE HAS BEEN REDUCED TO 30 PSI (2.06 BAR) OR
LESS. WHEN WORKING WITH COMPRESSED AIR ALWAYS USE CHIP GUARDS,
EYE PROTECTION, AND OTHER PERSONAL EQUIPMENT.
a.
Remove slight ridges, score marks, and glaze with hone brush, equipped with 20-grit stones. Work
hone up and down rapidly the full length of the cylinder bore several times in a crisscross pattern. Criss-cross pattern
produces hone marks on a 45-degree axis, which aid piston movement and helps prevent formation of ridges.
b.
Clean cylinder with dry cleaning solvent and dry with low pressure compressed air. Remove any
burrs.
c.
Recheck cylinder bore and out of round on repaired cylinder as described above. Replace if out of
tolerance. Refer to Table 5-3.
d.
Apply a bead of silicone sealant at the base of the finned section of the cylinder to seal the joint
between the cylinder and the crankcase.
e.
Install piston in accordance with paragraph 5-6.6. Apply engine lubricating oil to piston rings.
f.
Ensure piston ring gaps are out of alignment by 120 degrees.
CAUTION
When installing cylinder, make sure piston or connecting rod does not knock
against crankcase. This could result in serious damage to the piston or
connecting rod. Use care when installing cylinder to prevent damage to piston
rings.
g.
Compress piston rings with piston ring clamp (Figure 5-38, Item 2).
h.
Apply lubricating oil to inside of cylinder and slowly mount cylinder on studs (4). Remove piston ring
clamp (2).
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